Buggy code:
public final class OmssaDeploymentService extends DeploymentService < DeploymentResult > { private static final Logger LOGGER = Logger . getLogger ( OmssaDeploymentService . class ) ; public static final String TYPE = "omssaDeployer" ; public static final String NAME = "Omssa<seq2seq4repair_space>DB<seq2seq4repair_space>Deployer" ; public static final String DESC = "Indexes<seq2seq4repair_space>FASTA<seq2seq4repair_space>databases<seq2seq4repair_space>for<seq2seq4repair_space>OMSSA.<seq2seq4repair_space>OMSSA<seq2seq4repair_space>requires<seq2seq4repair_space>the<seq2seq4repair_space>databases<seq2seq4repair_space>to<seq2seq4repair_space>be<seq2seq4repair_space>indexed<seq2seq4repair_space>before<seq2seq4repair_space>it<seq2seq4repair_space>can<seq2seq4repair_space>use<seq2seq4repair_space>them." ; private File formatDbExe ; private final List < String > indexExtensions = Arrays . asList ( ".phr" , ".pin" , ".psd" , ".psi" , ".psq" ) ; public static final String FORMATDBEXEC_LOG_FILE_NAME = "formatdb.log" ; private static final int DEPLOYMENT_LOCK_TIMEOUT = ( 5 * 60 ) * 1000 ; public static final String FORMAT_DB_EXE = "formatDbExe" ; public static final String DEPLOYABLE_DB_FOLDER = "deployableDbFolder" ; public OmssaDeploymentService ( File formatDbExe ) { } public File getFormatDbExe ( ) { } public void setFormatDbExe ( File formatDbExe ) { } private File getDeployableFile ( File curationFile ) { File toDeploy = getDeployedFastaFile ( curationFile ) ; <START_BUG> FileUtilities . ensureFolderExists ( curationFile . getParentFile ( ) ) ; <END_BUG> if ( ! ( toDeploy . exists ( ) ) ) { FileUtilities . copyFile ( curationFile , toDeploy , true ) ; } return toDeploy ; } private File getDeployedFastaFile ( File curationFile ) { } private File checkForPreviousDeployment ( final File deployableFile ) { } public DeploymentResult performDeployment ( DeploymentRequest request ) { } @ Override public DeploymentResult performUndeployment ( DeploymentRequest request ) { } protected void validateAndDeleteDeploymentRelatedFiles ( File deployedFastaFile , File deploymentFolder , List < File > deletedFiles , List < File > notDeletedFiles ) { } protected ProcessCaller getFormatDBCaller ( File fastaFile ) { } private static final Map < String , List < ProgressReporter > > CO_DEPLOYMENTS = new HashMap < String , List < ProgressReporter > > ( ) ; public Map < String , List < ProgressReporter > > getCoDeployments ( ) { } public static final class Config implements ResourceConfig { private String formatDbExe ; private String deployableDbFolder ; public Config ( ) { } public Config ( String formatDbExe , String deployableDbFolder ) { } public String getDeployableDbFolder ( ) { } public void setDeployableDbFolder ( String deployableDbFolder ) { } public String getFormatDbExe ( ) { } public void setFormatDbExe ( String formatDbExe ) { } public Map < String , String > save ( DependencyResolver resolver ) { } public void load ( Map < String , String > values , DependencyResolver resolver ) { } @ Override public int getPriority ( ) { } } public static final class Factory extends WorkerFactoryBase < OmssaDeploymentService . Config > { @ Override public Worker create ( OmssaDeploymentService . Config config , DependencyResolver dependencies ) { } } public static final class Ui implements ServiceUiFactory { private static final String WINDOWS = "bin//formatdb//windows//formatdb.exe" ; private static final String LINUX = "bin//formatdb//linux//formatdb" ; private static final String DEFAULT_DEPLOYMENT_FOLDER = "var//omssa_index" ; public void createUI ( DaemonConfig daemon , ResourceConfig resource , UiBuilder builder ) { } } }

Fix:
FileUtilities . ensureFolderExists ( toDeploy . getParentFile ( ) ) ;